CN208833395U - Electromagnetic heating equipment and isolation temperature measurement circuit - Google Patents
Electromagnetic heating equipment and isolation temperature measurement circuit Download PDFInfo
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- CN208833395U CN208833395U CN201821801809.4U CN201821801809U CN208833395U CN 208833395 U CN208833395 U CN 208833395U CN 201821801809 U CN201821801809 U CN 201821801809U CN 208833395 U CN208833395 U CN 208833395U
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- 238000009529 body temperature measurement Methods 0.000 title claims abstract description 58
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- 238000001514 detection method Methods 0.000 claims description 5
- 230000036760 body temperature Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- MKGHDZIEKZPBCZ-ULQPCXBYSA-N methyl (2s,3s,4r,5r,6r)-4,5,6-trihydroxy-3-methoxyoxane-2-carboxylate Chemical compound CO[C@H]1[C@H](O)[C@@H](O)[C@H](O)O[C@@H]1C(=O)OC MKGHDZIEKZPBCZ-ULQPCXBYSA-N 0.000 claims 8
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Abstract
The utility model provides an electromagnetic heating equipment and isolation temperature measurement circuit. Wherein, electromagnetic heating equipment includes: the device comprises a device body and a base, wherein when the device body is placed on the base, the device body is coupled with the base through an electric coupler; the device also comprises an isolation temperature measuring circuit; the isolation temperature measuring circuit comprises a temperature sensor arranged on the appliance body for detecting the temperature of the appliance body and a temperature measuring circuit arranged in the base; the temperature sensor is electrically connected with the temperature measuring circuit through the electric coupler; and the temperature measuring circuit is used for providing a second power supply voltage and a second reference ground voltage for the base, providing a first power supply voltage and a first reference ground voltage for the appliance body through the electric coupler, and inputting a temperature signal output by the temperature sensor according to the first power supply voltage and the first reference ground voltage through the electric coupler. Signals in the appliance body can be transmitted to the base through the electric coupler and the isolation temperature measuring circuit, the circuit structure is simple, and the cost is reduced.
Description
Technical field
The utility model relates to field of home appliance technology more particularly to a kind of electromagnetic heating apparatus and isolation thermometric electricity
Road.
Background technique
With the extensive use of electromagnetic heating (Induction Heating, IH) technology, there are more and more fissions
Formulas I H heats product.Split type IH heating product includes independent utensil and heated base.When work, utensil is placed on heating bottom
On seat.Can be separated when not working, it is easy to use.
Split type IH heats product, needs to carry out the transmitting of temperature information between heated base and utensil.It generallys use
Wireless transmission method.At this point, being required to setting wireless transport module and micro-control unit in utensil and heated base
(Microcontroller Unit, MCU), and use independently-powered mode.For example, being powered in utensil using battery.
Due to needing to be respectively provided with wireless transport module and MCU in heated base and utensil, split type IH heating is caused to produce
The circuit of product is complicated, and with high costs.
Utility model content
In order to solve the problems, such as at least one mentioned in background technique, the utility model provide a kind of electromagnetic heating apparatus and
Temperature measurement circuit is isolated, simplifies circuit structure, reduces costs.
To achieve the goals above, the utility model provides a kind of electromagnetic heating apparatus, comprising: apparatus body and pedestal,
When the apparatus body is placed on the base, the apparatus body is of coupled connections with the pedestal by electric coupler；
Further include: isolation temperature measurement circuit；The isolation temperature measurement circuit includes being arranged on the apparatus body described in detection
The temperature sensor of apparatus body temperature and the temperature measurement circuit being arranged in the pedestal；The temperature sensor and the thermometric
Circuit is electrically connected by the electric coupler；
The temperature measurement circuit provides the second supply voltage and second with reference to ground voltage for the pedestal, passes through the thermocouple
Clutch provides the first supply voltage and first with reference to ground voltage for the apparatus body, and by described in electric coupler input
The temperature signal that temperature sensor is exported according to first supply voltage and described first with reference to ground voltage detection.
Electromagnetic heating apparatus as described above, apparatus body and pedestal are separate structure, and between apparatus body and pedestal
It is electrically coupled connection.By the way that temperature measurement circuit is isolated, realize as apparatus body and pedestal isolation power supply.Also, in apparatus body
Signal can be transferred to pedestal by electric coupler and isolation temperature measurement circuit, and circuit structure is simple, it is easy to accomplish, it reduces into
This.
In an embodiment of the utility model, the temperature measurement circuit includes: power circuit, isolation circuit, sample circuit
And MCU；
First output end of the power circuit is electrically connected with the temperature sensor, the second output of the power circuit
End is electrically connected with the sample circuit and the MCU respectively, and the input terminal of the isolation circuit is defeated with the temperature sensor
Outlet connection, the output end of the isolation circuit connect with the signal input part of the sample circuit, the sample circuit it is defeated
Outlet is connect with the MCU；
The power circuit, by first output end for the temperature sensor provide first supply voltage and
Described first refers to ground voltage, is respectively that the MCU and the sample circuit provide described second by the second output terminal
Supply voltage and described second refers to ground voltage；
The temperature signal that the temperature sensor of input exports is converted to the first telecommunications by the isolation circuit
Number, and first electric signal is exported to the signal input part of the sample circuit；
The sample circuit refers to ground voltage for first electric signal according to second supply voltage and described second
The second electric signal is converted to, and second electric signal is exported to the MCU.
In an embodiment of the utility model, the power circuit includes: switching power circuit, the first power supply output electricity
Road and second source output circuit；
The switching power circuit includes transformer, and the transformer includes armature winding, the first secondary windings and second
Secondary windings；The input terminal of first power output circuit is electrically connected with first secondary windings, and the second source is defeated
The input terminal of circuit is electrically connected with the second subprime winding out；
First power output circuit provides first supply voltage and described first and refers to ground voltage；
The second source output circuit provides second supply voltage and described second and refers to ground voltage.
In an embodiment of the utility model, first power output circuit includes first diode and the first electrolysis
Capacitor；
The anode of the first diode is connect with one end of first secondary windings, the cathode of the first diode
It is connect with the anode of first electrolytic capacitor, the other end of the cathode of first electrolytic capacitor and first secondary windings
Connection.
In an embodiment of the utility model, the second source output circuit includes the second diode and the second electrolysis
Capacitor；
The anode of second diode is connect with one end of the second subprime winding, the cathode of second diode
It is connect with the anode of second electrolytic capacitor, the other end of the cathode of second electrolytic capacitor and the second subprime winding
Connection.
It further include first resistor and first capacitor in parallel in an embodiment of the utility model；
One end of the first resistor, one end of the first capacitor and the temperature sensor one end, with it is described
The first input end of isolation circuit connects, and electricity is isolated with described in the other end of the first resistor other end and the first capacitor
Second input terminal on road connects.
In an embodiment of the utility model, the first resistor and the first capacitor are arranged in the apparatus body
On.
In an embodiment of the utility model, the first resistor and the first capacitor are arranged in the pedestal.
In an embodiment of the utility model, the sample circuit includes: concatenated second resistance and the second capacitor；
One end of the second resistance and second capacitance connection is connect with the first output end of the isolation circuit, institute
The other end not connecting with the second resistance on the second capacitor is stated to connect with the second output terminal of the isolation circuit.
In the above embodiments of the present invention, the isolation circuit is linear optocoupler.
The utility model also provides a kind of isolation temperature measurement circuit, comprising: power circuit adopts circuit temperature, isolation circuit, sampling
Circuit and MCU；
The output end of the power circuit is electrically connected with circuit temperature, the MCU and the sample circuit adopted respectively, institute
It states and adopts the output end of circuit temperature and connect with the input terminal of the isolation circuit, the input terminal of the isolation circuit and the sampling are electric
The signal input part on road connects, and the output end of the sample circuit is connect with the MCU；
The power circuit adopts circuit temperature for described in and provides the first supply voltage and first with reference to ground voltage, is the MCU
The second supply voltage and second, which is provided, with the sample circuit refers to ground voltage；
It is described to adopt circuit temperature, it is defeated to the isolation circuit with reference to ground voltage according to first supply voltage and described first
Temperature signal out；
The temperature signal is converted to the first electric signal by the isolation circuit, and by first electric signal export to
The signal input part of the sample circuit；
The sample circuit refers to ground voltage for first electric signal according to second supply voltage and described second
The second electric signal is converted to, and second electric signal is exported to the MCU.
In an embodiment of the utility model, the power circuit includes: switching power circuit, the first power supply output electricity
Road and second source output circuit；
The switching power circuit includes transformer, and the transformer includes armature winding, the first secondary windings and second
Secondary windings；The input terminal of first power output circuit is electrically connected with first secondary windings, and the second source is defeated
The input terminal of circuit is electrically connected with the second subprime winding out；
First power output circuit provides first supply voltage and described first and refers to ground voltage；
The second source output circuit provides second supply voltage and described second and refers to ground voltage.
In an embodiment of the utility model, first power output circuit includes first diode and the first electrolysis
Capacitor；
The anode of the first diode is connect with one end of first secondary windings, the cathode of the first diode
It is connect with the anode of first electrolytic capacitor, the other end of the cathode of first electrolytic capacitor and first secondary windings
Connection.
In an embodiment of the utility model, the second source output circuit includes the second diode and the second electrolysis
Capacitor；
The anode of second diode is connect with one end of the second subprime winding, the cathode of second diode
It is connect with the anode of second electrolytic capacitor, the other end of the cathode of second electrolytic capacitor and the second subprime winding
Connection.
In an embodiment of the utility model, the circuit temperature of adopting includes temperature sensor, first resistor and the first electricity
Hold；Wherein, the temperature sensor is connected with the first resistor, and the first resistor and the first capacitor are in parallel；
One end that the temperature sensor is connect with the first resistor is connect with the first input end of the isolation circuit,
The other end that the first resistor is not connect with the temperature sensor is connect with the second input terminal of the isolation circuit.
In an embodiment of the utility model, the first resistor and the first capacitor are arranged in the apparatus body
On.
In an embodiment of the utility model, the first resistor and the first capacitor are arranged in the pedestal.
In an embodiment of the utility model, the sample circuit includes: concatenated second resistance and the second capacitor；
One end of the second resistance and second capacitance connection is connect with the first output end of the isolation circuit, institute
The other end not connecting with the second resistance on the second capacitor is stated to connect with the second output terminal of the isolation circuit.
In the above embodiments of the present invention, the isolation circuit is linear optocoupler.
The construction of the utility model and its other purpose of utility model and beneficial effect will be in conjunction with the accompanying drawings
Description of preferred embodiments and it is more obvious and easy to understand.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is
Some embodiments of the utility model, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of electromagnetic heating apparatus provided by the embodiment of the utility model；
Fig. 2 is the structural schematic diagram of temperature measurement circuit provided by the embodiment of the utility model；
Fig. 3 is the circuit diagram of power circuit provided by the embodiment of the utility model；
Fig. 4 is the schematic diagram of isolation temperature measurement circuit provided by the embodiment of the utility model；
Fig. 5 is the schematic diagram for the isolation temperature measurement circuit that another embodiment of the utility model provides.
Description of symbols:
11: apparatus body；12: pedestal；
13: isolation temperature measurement circuit；14: temperature measurement circuit；
111: temperature sensor；
141: power circuit；142: isolation circuit；
143: sample circuit；144:MCU；
145: adopting circuit temperature；
1411: switching power circuit；1412: the first power output circuits；
1413: second source output circuit.
Specific embodiment
It is practical new below in conjunction with this to keep the objectives, technical solutions, and advantages of the embodiments of the present invention clearer
Attached drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model a part of the embodiment, instead of all the embodiments.Based on the implementation in the utility model
Example, every other embodiment obtained by those of ordinary skill in the art without making creative efforts belong to
The range of the utility model protection.
Fig. 1 is the structural schematic diagram of electromagnetic heating apparatus provided by the embodiment of the utility model.It is to be appreciated that the present embodiment
For electromagnetic heating apparatus type without limitation.For example, electromagnetic heating kettle, electromagnetic heating health-promotion kettle, electromagnetic heating cookware,
Deng.As shown in Figure 1, electromagnetic heating apparatus provided in this embodiment, may include:
Apparatus body 11 and pedestal 12.When apparatus body 11 is placed on pedestal 12, apparatus body 11 passes through with pedestal 12
Electric coupler (not shown) is of coupled connections.
Further include: isolation temperature measurement circuit 13.
Isolation temperature measurement circuit 13 includes being arranged on apparatus body 11 for detecting the temperature sensing of 11 temperature of apparatus body
Device 111 and the temperature measurement circuit 14 being arranged in pedestal 12.Temperature sensor 111 is electrically connected with temperature measurement circuit 14 by electric coupler
It connects.
Temperature measurement circuit 14 is used for: being provided the second supply voltage and second with reference to ground voltage for pedestal 12, is passed through electric coupler
The first supply voltage and first is provided with reference to ground voltage for apparatus body 11, and passes through electric coupler input temp sensor 111
The temperature signal exported according to the first supply voltage and first with reference to ground voltage detection.
Electromagnetic heating apparatus provided in this embodiment, in structure, apparatus body 11 and pedestal 12 are separate structure.Utensil
When ontology 11 is placed on pedestal 12, apparatus body 11 is of coupled connections with pedestal 12 by electric coupler.The present embodiment is for electricity
The structure of coupler is without limitation.Optionally, electric coupler may include upper coupler and lower coupler.Upper coupler setting exists
The top of pedestal 12 is arranged in the bottom of apparatus body 11, lower coupler.When apparatus body 11 is placed on pedestal 12, upper coupling
Device is connect with lower coupler.Optionally, electric coupler can be electrically coupled for three core electric couplers, five core electric couplers or six cores
Device.
Electromagnetic heating apparatus further includes isolation temperature measurement circuit 13.On setting position, a part of temperature measurement circuit 13 is isolated
It is arranged on apparatus body 11, another part part is arranged in pedestal 12, is electrically connected between two parts by electric coupler realization
It connects.Specifically, isolation temperature measurement circuit 13 includes the temperature sensor 111 being arranged on apparatus body 11, and it is arranged in pedestal
Temperature measurement circuit 14 in 12.Wherein, temperature sensor 111 is used to detect the temperature of apparatus body 11.
Electromagnetic heating apparatus provided in this embodiment, working principle are as follows:
In power supply mode, by the temperature measurement circuit 14 being arranged in pedestal 12, the second power supply can be provided for pedestal 12
Voltage and second refers to ground voltage, thus the light current power elements being embodied as in pedestal 12.Pass through the survey being arranged in pedestal 12
Circuit temperature 14 and electric coupler can provide the first supply voltage and first with reference to ground voltage, to realize for apparatus body 11
For the light current power elements in apparatus body 11.For example, powering for temperature sensor 111.
Due to not needing that power supply circuit is separately provided in apparatus body, reduce the number of elements in apparatus body, letter
Circuit structure is changed.Moreover, because temperature measurement circuit is respectively apparatus body and pedestal provides supply voltage and refers to ground voltage, it is real
Show for being electrically isolated, has reduced circuit interference.
In the transmitting of information, temperature sensor 111 can be detected according to the first supply voltage and first with reference to ground voltage
Output temperature signal.By electric coupler, temperature signal is transmitted to the temperature measurement circuit 14 in pedestal 12, to realize utensil sheet
Information transmitting between body 11 and pedestal 12.
Due to utilizing circuit transmission temperature signal, wireless way for transmitting is not used, avoids and is arranged in apparatus body
Wireless transport module and MCU, avoid and wireless transport module are arranged in the base, reduce number of elements, simplify circuit knot
Structure reduces costs.Moreover, avoiding the electromagnetic radiation of generation during wireless transmission and being done to the communication of other electric appliances
It disturbs.
As it can be seen that electromagnetic heating apparatus provided in this embodiment, apparatus body and pedestal be separate structure, and apparatus body and
Connection is electrically coupled between pedestal.By the way that temperature measurement circuit is isolated, realize as apparatus body and pedestal isolation power supply.Also, utensil
Signal in ontology can be transferred to pedestal by electric coupler and isolation temperature measurement circuit, and circuit structure is simple, it is easy to accomplish, drop
Low cost.
It should be noted that the present embodiment for apparatus body 11 and pedestal 12 shape without limitation.
It should be noted that the present embodiment for temperature sensor 111 implementation without limitation.For example, temperature passes
Sensor 111 can be thermistor.Thermistor can be positive temperature coefficient (Positive Temperature
Coefficient, PTC) thermistor or negative temperature coefficient (Negative Temperature Coefficient, NTC)
Thermistor.
Optionally, Fig. 2 is the structural schematic diagram of temperature measurement circuit provided by the embodiment of the utility model.As shown in Fig. 2, thermometric
Circuit 14 may include: power circuit 141, isolation circuit 142, sample circuit 143 and MCU144.
First output end of power circuit 141 is electrically connected with temperature sensor 111, the second output terminal of power circuit 141
It is electrically connected respectively with sample circuit 143 and MCU144, the input terminal of isolation circuit 142 and the output end of temperature sensor 111 connect
Connect, the output end of isolation circuit 142 is connect with the signal input part of sample circuit 143, the output end of sample circuit 143 with
MCU144 connection.
Power circuit 141 is used for: being that temperature sensor 111 provides the first supply voltage and the first ginseng by the first output end
Ground voltage is examined, is respectively that MCU144 and sample circuit 143 provide the second supply voltage and second with reference to ground by second output terminal
Voltage.
Isolation circuit 142 is used for: the temperature signal that the temperature sensor 111 of input exports is converted into the first electric signal,
And the first electric signal is exported to the signal input part of sample circuit 143.
Sample circuit 143 is used for: the first electric signal being converted to the with reference to ground voltage according to the second supply voltage and second
Two electric signals, and the second electric signal is exported to MCU144.
Temperature measurement circuit provided in this embodiment, working principle are as follows:
In power supply mode, power circuit 141 includes two output ends, is referred to as the first output end and the second output
End.First output end of power circuit 141 is electrically connected by electric coupler with temperature sensor 111, is mentioned for temperature sensor 111
Ground voltage is referred to for the first supply voltage and first, to be embodied as the power supply of temperature sensor 111.The second of power circuit 141
Output end is electrically connected with MCU144 and sample circuit 143 respectively, for MCU144 and sample circuit 143 provide the second supply voltage and
Second refers to ground voltage, thus the light current power elements being embodied as in pedestal 12.
Power supply electricity is provided since power circuit passes through the first output end and second output terminal respectively for apparatus body and pedestal
Ground voltage is pressed and referred to, realizes for being electrically isolated, reduces circuit interference.
In the transmitting of information, the first supply voltage and first that temperature sensor 111 is provided according to power circuit 141 are joined
It examines ground voltage detection and obtains temperature signal, exported temperature signal to the input terminal of isolation circuit 142 by electric coupler.Isolation
The temperature signal of input is converted to the first electric signal by circuit 142, and being isolated for temperature signal and the first electric signal may be implemented, and
First electric signal is exported to the input terminal of sample circuit 143.Sample circuit 143 is supplied according to second that power circuit 141 provides
First electric signal is converted to the second electric signal with reference to ground voltage by piezoelectric voltage and second, and by the second electric signal export to
MCU144.To realize the transmitting of the information between apparatus body 11 and pedestal 12.
Due to utilizing circuit transmission temperature signal, circuit structure is simplified, is reduced costs.
It should be noted that the present embodiment for isolation circuit 142 implementation without limitation.
Optionally, isolation circuit 142 can be linear optocoupler.
Photo-coupler (optical coupler, OC) is also referred to as optoisolator, optocoupler, is using light as media transmission telecommunications
Number a kind of electrical-optical-electrical switching device.The electric signal of input terminal is converted to optical signal, coupling using light as medium by photo-coupler
It closes output end and is reconverted into electric signal, because of referred to herein as photo-coupler.Photo-coupler has input, output electric signal good
Buffer action has good electrical isolation capabilities and anti-interference ability.Wherein, linear optocoupler is a kind of for analog signal
The optocoupler of isolation.Linear optocoupler outputs and inputs as analog signal, and the effect of linear isolation may be implemented.
Optionally, as shown in Fig. 2, power circuit 141 may include: switching power circuit 1411, the first power supply output electricity
Road 1412 and second source output circuit 1413.
Switching power circuit 1411 includes transformer, and transformer includes armature winding, the first secondary windings and second subprime
Winding.The input terminal of first power output circuit 1412 is electrically connected with the first secondary windings, second source output circuit 1413
Input terminal is electrically connected with second subprime winding.
First power output circuit 1412 refers to ground voltage for providing the first supply voltage and first.
Second source output circuit 1413 refers to ground voltage for providing the second supply voltage and second.
Specifically, switching power circuit 1411 includes transformer.Transformer includes two secondary windings, is referred to as first
Secondary windings and second subprime winding.Two secondary windings are respectively connected to two power output circuits, respectively apparatus body 11
It powers with pedestal 12.
Two different secondary windings by transformer are respectively that apparatus body and pedestal provide supply voltage and reference
Ground voltage realizes for being electrically isolated, reduces circuit interference.
Optionally, a kind of implementation of power circuit 141 is provided below by example shown in Fig. 3.
Fig. 3 is the circuit diagram of power circuit provided by the embodiment of the utility model.As shown in figure 3, power circuit 141 includes
Switching power circuit 1411, the first power output circuit 1412 and second source output circuit 1413.
Switching power circuit 1411 include transformer T1, transformer T1 include armature winding N1, the first secondary windings N2 and
Second subprime winding N3.
First power output circuit 1412 includes first diode D1 and the first electrolytic capacitor EC1.
Wherein, the anode of first diode D1 is connect with one end of the first secondary windings N2, the cathode of first diode D1
It is connect with the anode of the first electrolytic capacitor EC1, the other end of the cathode of the first electrolytic capacitor EC1 and the first secondary windings N2 connect
It connects.
First power output circuit 1412 provides the first supply voltage (labeled as VDD1) and first with reference to ground voltage (mark
It is denoted as GND1).
Second source output circuit 1413 includes the second diode D2 and the second electrolytic capacitor EC2.
Wherein, the anode of the second diode D2 is connect with one end of second subprime winding N3, the cathode of the second diode D2
It is connect with the anode of the second electrolytic capacitor EC2, the cathode of the second electrolytic capacitor EC2 and the other end of second subprime winding N3 connect
It connects.
Second source output circuit 1413 provides the second supply voltage (labeled as VDD2) and second with reference to ground voltage (mark
It is denoted as GND2).
The present embodiment provides a kind of electromagnetic heating apparatus, comprising: apparatus body and pedestal.Apparatus body is placed on pedestal
When, apparatus body and pedestal are of coupled connections by electric coupler.It further include isolation temperature measurement circuit.It includes setting that temperature measurement circuit, which is isolated,
For detecting the temperature measurement circuit of the temperature sensor and setting of utensil body temperature in the base on apparatus body.Temperature sensing
Device is electrically connected with temperature measurement circuit by electric coupler.Electromagnetic heating apparatus provided in this embodiment, apparatus body and pedestal are point
Body structure, and connection is electrically coupled between apparatus body and pedestal.By the way that temperature measurement circuit is isolated, realize as apparatus body and pedestal
Isolation power supply.Also, the signal in apparatus body can be transferred to pedestal, circuit knot by electric coupler and isolation temperature measurement circuit
Structure is simple, it is easy to accomplish, it reduces costs.
Below on the basis of embodiment shown in Fig. 1, a kind of specific implementation of isolation temperature measurement circuit is provided.It please refers to
Fig. 4.Fig. 4 is the schematic diagram of isolation temperature measurement circuit provided by the embodiment of the utility model.
As shown in figure 4, isolation temperature measurement circuit 13 provided in this embodiment, may include:
The survey of temperature sensor 111 on apparatus body for detecting utensil body temperature and setting in the base is set
Circuit temperature.Wherein, temperature measurement circuit may include: power circuit (not shown), isolation circuit 142,143 and of sample circuit
MCU144。
Wherein, temperature sensor 111 is resistance RT1, and isolation circuit 142 is linear optocoupler IC1.
Wherein, power circuit is used for, and provides the first supply voltage (labeled as VDD1) and the first ginseng for temperature sensor 111
Examine ground voltage (labeled as GND1), respectively MCU144 and sample circuit 143 provide the second supply voltage (being labeled as VDD2) and
Second with reference to ground voltage (being labeled as GND2).
Wherein, sample circuit 143 may include: concatenated second resistance R2 and the second capacitor C2.
First output end of one end and isolation circuit of second resistance R2 and the second capacitor C2 connection connects, the second capacitor C2
On the other end that is not connect with second resistance R2 connect with the second output terminal of isolation circuit 142.
It can also include first resistor R1 and first capacitor C1 in parallel that temperature measurement circuit 13, which is isolated,.
One end of first resistor R1, one end of first capacitor C1 and temperature sensor 111 one end, with isolation circuit
Second input of first input end connection, the other end of first resistor R1 and the other end of first capacitor C1 and isolation circuit 142
End connection.
Isolation temperature measurement circuit provided in this embodiment, working principle are as follows:
In power supply mode, it is bottom that power circuit, which provides supply voltage VDD1 for apparatus body and refers to ground voltage GND1,
Seat provides supply voltage VDD2 and refers to ground voltage GND2, realizes for being electrically isolated.
In the transmitting of signal, resistance RT1, first resistor R1 and first capacitor C1 constitute bleeder circuit.Resistance RT1 root
Pass through first input end of the electric coupler (not shown) to IC1 with reference to ground voltage GND1 according to the first supply voltage VDD1 and first
(being labeled as 1) outputs temperature signal.The temperature signal can be voltage signal.The second input terminal (being labeled as 2) input of IC1
With reference to ground voltage GND1.IC1 is converted to the temperature signal of input by carrying out electrical-optical-electrical conversion to the temperature signal of input
First electric signal, and by the first output end (being labeled as 4) output to sample circuit 143.First electric signal can be voltage
Signal.Second output terminal (being labeled as 3) input of IC1 refers to ground voltage GND2.Concatenated second resistance R2 and the second capacitor C2,
Ground voltage GND2 is referred to according to the second supply voltage VDD2 and second, the first electric signal of input is converted into the second electric signal,
And the second electric signal is finally input to MCU144.Subsequent, MCU144 can carry out relevant treatment to the second electric signal.
Optionally, in order to promote the stability of sample circuit 143, the second capacitor C2 can 3rd resistor in parallel (do not show
Out).
Optionally, in some embodiments, temperature sensor 111, first resistor R1 and first capacitor C1 can be formed
Adopt circuit temperature 145.
Optionally, in one implementation, first resistor R1 and first capacitor C1 can be set on apparatus body.
In this kind of implementation, first resistor R1 and first capacitor C1 is arranged on apparatus body, it can be ensured that by
The integrality of the bleeder circuit of resistance RT1, first resistor R1 and first capacitor C1 composition, is convenient for circuit design.
Optionally, in another implementation, first resistor R1 and first capacitor C1 can be set in the base.
In this kind of implementation, in the base by first resistor R1 and first capacitor C1 setting, it is possible to reduce utensil sheet
The quantity of element in body, reduces the circuit structure in apparatus body, it is easy to accomplish.
The present embodiment provides a kind of isolation temperature measurement circuit, realize as apparatus body and pedestal isolation power supply.Also, utensil
Signal in ontology can be transferred to pedestal by electric coupler and isolation temperature measurement circuit, and circuit structure is simple, it is easy to accomplish, drop
Low cost.
Fig. 5 is the schematic diagram for the isolation temperature measurement circuit that another embodiment of the utility model provides.As shown in figure 5, this implementation
Example provide isolation temperature measurement circuit, may include:
Power circuit 141 adopts circuit temperature 145, isolation circuit 142, sample circuit 143 and MCU144.
The output end of power circuit 141 respectively with adopt circuit temperature 145, MCU144 and sample circuit 143 and be electrically connected, adopt warm electricity
The output end on road 145 is connect with the input terminal of isolation circuit 142, the input terminal of isolation circuit 142 and the signal of sample circuit 143
Input terminal connection, the output end of sample circuit 143 are connect with MCU144.
Power circuit 141 is used for: being provided the first supply voltage and first with reference to ground voltage to adopt circuit temperature 145, is
MCU144 and sample circuit 143 provide the second supply voltage and second and refer to ground voltage.
It adopts circuit temperature 145 to be used for: ground voltage is referred to 142 output temperature of isolation circuit according to the first supply voltage and first
Signal.
Isolation circuit 142 is used for: temperature signal being converted to the first electric signal, and the first electric signal is exported to sampling electricity
The signal input part on road 143.
Sample circuit 143 is used for: the first electric signal being converted to the with reference to ground voltage according to the second supply voltage and second
Two electric signals, and the second electric signal is exported to MCU144.
Optionally, power circuit 141 includes: switching power circuit 1411, the first power output circuit 1412 and the second electricity
Source follower circuit 1413；
Switching power circuit 1411 includes transformer, and transformer includes armature winding, the first secondary windings and second subprime
Winding；The input terminal of first power output circuit 1412 is electrically connected with the first secondary windings, second source output circuit 1413
Input terminal is electrically connected with second subprime winding；
First power output circuit 1412 refers to ground voltage for providing the first supply voltage and first；
Second source output circuit 1413 refers to ground voltage for providing the second supply voltage and second.
Optionally, the first power output circuit 1412 includes first diode and the first electrolytic capacitor；
The anode of first diode is connect with one end of the first secondary windings, the cathode of first diode and the first electrolysis electricity
The anode connection of appearance, the cathode of the first electrolytic capacitor are connect with the other end of the first secondary windings.
Optionally, second source output circuit 1413 includes the second diode and the second electrolytic capacitor；
The anode of second diode is connect with one end of second subprime winding, the cathode of the second diode and the second electrolysis electricity
The anode connection of appearance, the cathode of the second electrolytic capacitor are connect with the other end of second subprime winding.
Optionally, adopting circuit temperature 145 includes temperature sensor, first resistor and first capacitor；Wherein, temperature sensor with
First resistor series connection, first resistor and first capacitor are in parallel；
One end that temperature sensor is connect with first resistor is connect with the first input end of isolation circuit 142, first resistor
The other end not connecting with temperature sensor and the second input terminal of isolation circuit connect.
It should be noted that the present embodiment does not do the setting position of temperature sensor, first resistor and first capacitor
It limits.For example, as shown in Figure 1, when isolation temperature measurement circuit 13 shown in fig. 5 is applied in the electromagnetic heating apparatus of separate structure
When, electromagnetic heating apparatus may include apparatus body and pedestal, and temperature sensor can be set on apparatus body.
Optionally, first resistor and first capacitor are arranged on apparatus body.
Optionally, first resistor and first capacitor are arranged in the base.
Optionally, sample circuit 143 includes: concatenated second resistance and the second capacitor；
First output end of one end and isolation circuit of second resistance and the second capacitance connection connects, on the second capacitor not with
The other end of second resistance connection is connect with the second output terminal of isolation circuit 142.
Optionally, isolation circuit 142 is linear optocoupler.
Isolation temperature measurement circuit provided in this embodiment, may refer to the description in FIG. 1 to FIG. 4 illustrated embodiment, and technology is former
Reason is similar with technical effect, and details are not described herein again.
The description and claims of this application and term " first ", " second ", " third ", " in above-mentioned attached drawing
The (if present)s such as four " are to be used to distinguish similar objects, without being used to describe a particular order or precedence order.
In addition, it is necessary to explanation, in the present invention unless specifically defined or limited otherwise, term " connection ",
" connected " etc. shall be understood in a broad sense, such as can be mechanical connection, be also possible to be electrically connected；It can be and be directly connected to, it can also be with
Indirectly connected through an intermediary, the connection inside two elements or the interaction relationship of two elements be can be, unless separately
Have and explicitly limit, for the ordinary skill in the art, can understand above-mentioned term in this reality as the case may be
With the concrete meaning in novel.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above-mentioned each method embodiment can lead to
The relevant hardware of program instruction is crossed to complete.Program above-mentioned can be stored in a computer readable storage medium.The journey
When being executed, execution includes the steps that above-mentioned each method embodiment to sequence；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
Finally, it should be noted that the above various embodiments is only to illustrate the technical solution of the utility model embodiment, rather than
It is limited；Although the utility model embodiment is described in detail referring to foregoing embodiments, this field it is common
Technical staff is it is understood that it is still possible to modify the technical solutions described in the foregoing embodiments, or to wherein
Some or all of technical characteristic is equivalently replaced；And these are modified or replaceed, and do not make the essence of corresponding technical solution
It is detached from the range of the utility model embodiment technical solution.
Claims (10)
1. a kind of electromagnetic heating apparatus characterized by comprising apparatus body (11) and pedestal (12), the apparatus body
(11) when being placed on the pedestal (12), the apparatus body (11) couples company by electric coupler with the pedestal (12)
It connects；
Further include: isolation temperature measurement circuit (13)；The isolation temperature measurement circuit (13) includes being arranged on the apparatus body (11)
The temperature measurement circuit (14) for detecting the temperature sensor (111) of the apparatus body temperature and being arranged in the pedestal (12)；Institute
It states temperature sensor (111) and is electrically connected with the temperature measurement circuit (14) by the electric coupler；
The temperature measurement circuit (14) provides the second supply voltage and second for the pedestal (12) and refers to ground voltage, by described
Electric coupler is that the apparatus body (11) provide the first supply voltage and first with reference to ground voltage, and pass through the electric coupler
Input the temperature that the temperature sensor (111) is exported according to first supply voltage and described first with reference to ground voltage detection
Signal.
2. electromagnetic heating apparatus according to claim 1, which is characterized in that the temperature measurement circuit (14) includes: power supply electricity
Road (141), isolation circuit (142), sample circuit (143) and micro-control unit MCU (144)；
First output end of the power circuit (141) is electrically connected with the temperature sensor (111), the power circuit
(141) second output terminal is electrically connected with the sample circuit (143) and the MCU (144) respectively, the isolation circuit
(142) input terminal is connect with the output end of the temperature sensor (111), the output end of the isolation circuit (142) and institute
The signal input part connection of sample circuit (143) is stated, the output end of the sample circuit (143) is connect with the MCU (144)；
The power circuit (141) is that the temperature sensor (111) provide first power supply by first output end
Voltage and described first refers to ground voltage, is respectively the MCU (144) and the sample circuit by the second output terminal
(143) second supply voltage and described second is provided and refers to ground voltage；
The temperature signal that the temperature sensor (111) of input exports is converted to first by the isolation circuit (142)
Electric signal, and first electric signal is exported to the signal input part of the sample circuit (143)；
The sample circuit (143) refers to ground voltage for first telecommunications according to second supply voltage and described second
Number the second electric signal is converted to, and second electric signal is exported to the MCU (144).
3. electromagnetic heating apparatus according to claim 2, which is characterized in that the power circuit (141) includes: switch electricity
Source circuit (1411), the first power output circuit (1412) and second source output circuit (1413)；
The switching power circuit (1411) includes transformer, and the transformer includes armature winding, the first secondary windings and
Secondary stage winding；The input terminal of first power output circuit (1412) is electrically connected with first secondary windings, and described
The input terminal of two power output circuits (1413) is electrically connected with the second subprime winding；
First power output circuit (1412) provides first supply voltage and described first and refers to ground voltage；
The second source output circuit (1413) provides second supply voltage and described second and refers to ground voltage.
4. electromagnetic heating apparatus according to claim 3, which is characterized in that the first power output circuit (1412) packet
Include first diode and the first electrolytic capacitor；
The anode of the first diode is connect with one end of first secondary windings, the cathode of the first diode and institute
State the anode connection of the first electrolytic capacitor, the other end company of the cathode of first electrolytic capacitor and first secondary windings
It connects.
5. electromagnetic heating apparatus according to claim 2, which is characterized in that further include first resistor and the first electricity in parallel
Hold；
One end of the first resistor, one end of the first capacitor and the temperature sensor (111) one end, with it is described
The first input end of isolation circuit connects, and the other end of the other end of the first resistor and the first capacitor is isolated with described
Second input terminal of circuit (142) connects.
6. electromagnetic heating apparatus according to claim 5, which is characterized in that the first resistor and the first capacitor are set
It sets on the apparatus body (11).
7. electromagnetic heating apparatus according to claim 5, which is characterized in that the first resistor and the first capacitor are set
It sets in the pedestal (12).
8. electromagnetic heating apparatus according to claim 2, which is characterized in that the sample circuit (143) includes: concatenated
Second resistance and the second capacitor；
One end of the second resistance and second capacitance connection is connect with the first output end of the isolation circuit, and described
The other end not connecting with the second resistance on two capacitors is connect with the second output terminal of the isolation circuit (142).
9. according to the described in any item electromagnetic heating apparatus of claim 2-8, which is characterized in that the isolation circuit (142) is
Linear optocoupler.
10. a kind of isolation temperature measurement circuit characterized by comprising power circuit (141) adopts circuit temperature (145), isolation circuit
(142), sample circuit (143) and micro-control unit MCU (144)；
The output end of the power circuit (141) adopts circuit temperature (145), the MCU (144) and sampling electricity with described respectively
Road (143) electrical connection, the output end for adopting circuit temperature (145) connect with the input terminal of the isolation circuit (142), it is described every
Input terminal from circuit (142) is connect with the signal input part of the sample circuit (143), the sample circuit (143) it is defeated
Outlet is connect with the MCU (144)；
The power circuit (141) provides the first supply voltage and first with reference to ground voltage for described adopt circuit temperature (145), is
The MCU (144) and the sample circuit (143) provide the second supply voltage and second and refer to ground voltage；
It is described to adopt circuit temperature (145), ground voltage is referred to the isolation circuit according to first supply voltage and described first
(142) output temperature signal；
The temperature signal is converted to the first electric signal by the isolation circuit (142), and by first electric signal export to
The signal input part of the sample circuit (143)；
The sample circuit (143) refers to ground voltage for first telecommunications according to second supply voltage and described second
Number the second electric signal is converted to, and second electric signal is exported to the MCU (144).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821801809.4U CN208833395U (en) | 2018-11-02 | 2018-11-02 | Electromagnetic heating equipment and isolation temperature measurement circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821801809.4U CN208833395U (en) | 2018-11-02 | 2018-11-02 | Electromagnetic heating equipment and isolation temperature measurement circuit |
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| CN208833395U true CN208833395U (en) | 2019-05-07 |
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| CN201821801809.4U Active CN208833395U (en) | 2018-11-02 | 2018-11-02 | Electromagnetic heating equipment and isolation temperature measurement circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200058A (en) * | 2019-06-20 | 2019-09-06 | 江苏仁康蛋业有限公司 | A kind of sterilizing unit based on user data |
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2018
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110200058A (en) * | 2019-06-20 | 2019-09-06 | 江苏仁康蛋业有限公司 | A kind of sterilizing unit based on user data |
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